We run kvm on ovz kernels. But it seems that the latest ovzkernel
has problems with posix timers, so kvm mouse movement in not smooth.
By default kvm uses timer_create() and timer_settime() syscalls.
To show the behavior I use the following command:
/usr/libexec/qemu-kvm -drive
file=ubuntu-9.04-desktop-amd64.iso,if=ide,index=2,media=cdrom -m 512 -net none
-clock dynticks
Everything runs normal when I use any other timer option ('rtc' or 'unix'). For
example
this works perfectly:
/usr/libexec/qemu-kvm -drive
file=ubuntu-9.04-desktop-amd64.iso,if=ide,index=2,media=cdrom -m 512 -net none
-clock unix
I also tested with standard redhat kernel without openvz patches - everything
work well there.
We run on debian, but you can also reproduce the bug on RHEL/CENTOS with the
packages provided by opennode:
# wget
http://opennode.activesys.org/CentOS/5/opennode/x86_64/RPMS/ovzkernel-2.6.18-164.11.1.el5.028stab068.3.x86_64.rpm
# wget
http://opennode.activesys.org/CentOS/5/opennode/x86_64/RPMS/kmod-kvm-83-105.asys.22.4.x86_64.rpm
# wget
http://opennode.activesys.org/CentOS/5/opennode/x86_64/RPMS/kvm-83-105.asys.22.4.x86_64.rpm
# rpm -i ovzkernel-2.6.18-164.11.1.el5.028stab068.3.x86_64.rpm
# rpm -i kmod-kvm-83-105.asys.22.4.x86_64.rpm
# rpm -i kvm-83-105.asys.22.4.x86_64.rpm
Any ideas whats wrong?
- Dietmar
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